On Wed, Dec 09, 2020 at 08:49:38PM +0800, Hou, Xiaomeng (Matthew) wrote:
> RLC is halted when system suspend/shutdown. However, due to DPM enabled, PMFW
> is
> unaware of RLC being halted and will continue sending messages, which would
> eventually cause an ACPI hang. Use the system_feature_control interface to
> notify SMU the status of RLC thus enable/disable DPM feature.
>
> Signed-off-by: Xiaomeng Hou <xiaomeng....@amd.com>
> Change-Id: I2f1a7de23df7315a7b220ba6d0a4bcaa75c93fea
> ---
> .../gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c | 17 ++++++++++++++++-
> .../gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.h | 4 ++++
> 2 files changed, 20 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
> b/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
> index ddaa6a705fa6..fb16d94b4031 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c
> @@ -64,7 +64,7 @@ static struct cmn2asic_msg_mapping
> vangogh_message_map[SMU_MSG_MAX_COUNT] = {
> MSG_MAP(PowerUpIspByTile, PPSMC_MSG_PowerUpIspByTile,
> 0),
> MSG_MAP(PowerDownVcn, PPSMC_MSG_PowerDownVcn,
> 0),
> MSG_MAP(PowerUpVcn, PPSMC_MSG_PowerUpVcn,
> 0),
> - MSG_MAP(Spare, PPSMC_MSG_spare,
> 0),
> + MSG_MAP(RlcPowerNotify, PPSMC_MSG_RlcPowerNotify,
> 0),
> MSG_MAP(SetHardMinVcn, PPSMC_MSG_SetHardMinVcn,
> 0),
> MSG_MAP(SetSoftMinGfxclk, PPSMC_MSG_SetSoftMinGfxclk,
> 0),
> MSG_MAP(ActiveProcessNotify, PPSMC_MSG_ActiveProcessNotify,
> 0),
> @@ -722,6 +722,20 @@ static int
> vangogh_set_fine_grain_gfx_freq_parameters(struct smu_context *smu)
> return 0;
> }
>
> +static int vangogh_system_features_control(struct smu_context *smu, bool en)
> +{
> + int ret = 0;
> +
> + if (en)
> + ret = smu_cmn_send_smc_msg_with_param(smu,
> SMU_MSG_RlcPowerNotify,
> +
> RLC_STATUS_NORMAL, NULL);
> + else
> + ret = smu_cmn_send_smc_msg_with_param(smu,
> SMU_MSG_RlcPowerNotify,
> + RLC_STATUS_OFF,
> NULL);
I think we can simplify the codes as below:
return smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_RlcPowerNotify,
en ? RLC_STATUS_NORMAL : RLC_STATUS_OFF,
NULL);
With that update, series are Reviewed-by: Huang Rui <ray.hu...@amd.com>
> +
> + return ret;
> +}
> +
> static const struct pptable_funcs vangogh_ppt_funcs = {
>
> .check_fw_status = smu_v11_0_check_fw_status,
> @@ -750,6 +764,7 @@ static const struct pptable_funcs vangogh_ppt_funcs = {
> .print_clk_levels = vangogh_print_fine_grain_clk,
> .set_default_dpm_table = vangogh_set_default_dpm_tables,
> .set_fine_grain_gfx_freq_parameters =
> vangogh_set_fine_grain_gfx_freq_parameters,
> + .system_features_control = vangogh_system_features_control,
> };
>
> void vangogh_set_ppt_funcs(struct smu_context *smu)
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.h
> b/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.h
> index 8756766296cd..eab455493076 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.h
> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.h
> @@ -32,4 +32,8 @@ extern void vangogh_set_ppt_funcs(struct smu_context *smu);
> #define VANGOGH_UMD_PSTATE_SOCCLK 678
> #define VANGOGH_UMD_PSTATE_FCLK 800
>
> +/* RLC Power Status */
> +#define RLC_STATUS_OFF 0
> +#define RLC_STATUS_NORMAL 1
> +
> #endif
> --
> 2.17.1
>
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